[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fKJjlISJsOue88xf28hgFXGRgRhzbnzsVFJ92m2OolT0":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":8,"question":12,"related":13,"source":19,"type":20},[],"2025-12-21 11:43:54",277374705,[],{"courseId":9,"courseImg":10,"courseName":11},"53e1d2ef4961cca8eea3e23969ad2cb9","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F03a579384a6dc297c89809b582fcc767.png","默认课程","在单缝夫琅禾费衍射实验中,波长为λ的单色光垂直入射在宽度为4λ的单缝上,对应于衍射角为300的方向上,单缝处波阵面可分成的半波带数目为( )个(填数值)",[14,21,26,31,36,41,46,49,54,59],{"answer":15,"createTime":5,"id":16,"options":17,"question":18,"source":19,"type":20},[],277374699,[],"在一竖直轻弹簧下端悬挂质量m=5g的小球,弹簧伸长Δl=1cm而平衡,经推动后,该小球在竖直方向作振幅为A=5cm的振动,则小球的振动能量为____\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F220fe1f444f6703fad6467a2370e2790.png\">.(保留三位小数)","v1",2,{"answer":22,"createTime":5,"id":23,"options":24,"question":25,"source":19,"type":20},[],277374700,[],"在双缝干涉实验中,两缝间距为0.30 mm,用单色光垂直照射双缝,在离缝1.50m 的屏上测得中央明纹一侧第5条暗纹与另一侧第5条暗纹间的距离为27mm.问所用光的波长为_______nm",{"answer":27,"createTime":5,"id":28,"options":29,"question":30,"source":19,"type":20},[],277374701,[],"在简谐波的一条传播路径上,相距0.2m两点的振动位相差为\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F702ded58a3f130d6a5c648d0609e57f2.webp\">\u002F6,又知振动周期为0.6s,则波速为____m\u002Fs",{"answer":32,"createTime":5,"id":33,"options":34,"question":35,"source":19,"type":20},[],277374702,[],"如图所示,两列波长为λ的相干波在点P 相遇.波在点S1 振动的初相是φ1 ,点S1 到点P的距离是r1 .波在点S2的初相是φ2 ,点S2 到点P 的距离是r2 ,以k 代表零或正、负整数,若\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F58f7bebcb3dd829ffce27b4136753ad6.png\">则点P 是干涉_______(填极大或极小) \u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F2d01a0d473243479e36c2e00fa5486c0.png\">",{"answer":37,"createTime":5,"id":38,"options":39,"question":40,"source":19,"type":20},[],277374703,[],"使自然光通过两个偏振化方向相交60°的偏振片,透射光强为I1,今在这两个偏振片之间插入另一偏振片,它的方向与前两个偏振片均成30°角,则透射光强为____I1.(填有效数值)",{"answer":42,"createTime":5,"id":43,"options":44,"question":45,"source":19,"type":20},[],277374704,[],"一衍射光栅,当\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Ffb3820ccf8d336014b8725e9df6b45c8.png\">的单色光垂直照射时,测得第二级谱线的衍射角为\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F41435da1e4c64c53e59515d71eea249c.png\">,光栅常数为d=____nm",{"answer":47,"createTime":5,"id":6,"options":48,"question":12,"source":19,"type":20},[],[],{"answer":50,"createTime":5,"id":51,"options":52,"question":53,"source":19,"type":20},[],277374706,[],"在玻璃(折射率n3=1.60)表面镀一层增透膜(折射率n2=1.5),为了使波长为600nm的光从空气(折射率n1=1.00)垂直入射时尽可能减少反射,则增透膜的最小厚度应为( )nm(填数值)",{"answer":55,"createTime":5,"id":56,"options":57,"question":58,"source":19,"type":20},[],277374707,[],"图示为平面简谐波在t=0 时的波形图,且此时图中质点P 的运动方向向上.求该波的传播方向沿x轴______(填正向或负向).\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F526b372ea37bc5db9b22759d6b73cc61.png\">",{"answer":60,"createTime":5,"id":61,"options":62,"question":63,"source":19,"type":20},[],277374708,[],"质点沿X轴作谐振动的振动方程以\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F5557f74e0363de3f775b0d57a6acbb84.png\">表示,若以\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F7b4d7a00acd83d057e4263cafb5a8230.png\">,且向负方向运动为计时的起点时刻,则其初相为:____\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F69e40d87de2c633b6bae8ad5d61d1a2f.png\">.(填小数,保留一位小数)"]